Functional Near-Infrared Spectroscopy (IMAGE) Indiana University Caption The use of functional near-infrared spectroscopy technology allows researchers to measure brain activity in real time as volunteers craft ancient hand tools. Credit Shelby S. Putt Usage Restrictions Credit author License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.